Why bronze age when Tin was rare?Archeologists classify cultures according to the metals and materials they used. Stone age, bronze age and iron age are the classifications. Some say we live in iron age. Some say it's plastic age. But bronze age is special. It started around 3000 B.C. in Mesopotamia. Bronze is an alloy of tin and copper. Copper though is abundant around earth, Tin is very rare. But our ancients went after Mesopotamians and made everything out of bronze though Tin was rare to obtain. Bronze is very useful for its mechanical and thermal properties. And bronze age was the start of metallurgy and metal refining. Couldn't ancients have chosen a better material?
Here is an example. Aztecs used volcanic glass to make metals and artifacts. We know that ancients always lived nearby volcanoes. Why didn't they choose volcanic glass like Aztecs? There are many other examples where after stone age people molded things out of materials other than bronze.